METHOD AND APPARATUS FOR LOW-COMPLEXITY FREQUENCY DEPENDENT IQ IMBALANCE COMPENSATION

摘要

Methods and apparatuses are provided in which a processor of a transceiver selects one of a real component of a complex signal and an imaginary component of the complex signal. The complex signal has IQ imbalance. An adaptive filter of the transceiver performs a real multiplication operation using an adaptive filter coefficient and the one of the real component and the imaginary component of the complex signal to generate a complex compensation signal. An adder of the transceiver sums the complex signal and the complex compensation signal to generate a compensated signal in which the IQ imbalance is corrected. The compensated signal is output for digital processing.

主权项

1. A method, comprising:
selecting, by a processor of a transceiver, one of a real component of a complex signal and an imaginary component of the complex signal; performing, by an adaptive filter of the transceiver, a real multiplication operation using an adaptive filter coefficient and the one of the real component and the imaginary component of the complex signal to generate a complex compensation signal; and generating a compensated signal based on summing, by an adder of the transceiver, the complex signal and the complex compensation signal, wherein a filter adaptation module adapts the adaptive filter coefficient in subsequent iterations using the compensated signal.